Library Eusebius of Caesarea Church History
Book 4, Chapter 19: The Rulers of the Churches of Rome and Alexandria during the Reign of Verus.
1. In the eighth year of the above-mentioned reign Soter succeeded Anicetus as bishop of the church of Rome, after the latter had held office eleven years in all. But when Celadion had presided over the church of Alexandria for fourteen years he was succeeded by Agripinnus.
English translation by Arthur Cushman McGiffert, in Nicene and Post-Nicene Fathers, Series II, Vol. I (eds. Philip Schaff and Henry Wace; Buffalo: Christian Literature Publishing Co., 1890). Public domain. Digital text via New Advent Church Fathers.